feat(statistics): добавить BI-разрез и сводную матрицу

Сопоставить клиентов с ifIndex как на карте трафика, чтобы KPI пользователей не обнулялся. На экране — разрез остальных измерений и сводная матрица.

Co-authored-by: Cursor <[email protected]>

components/statistics/dimension-select.tsx

@@ -0,0 +1,73 @@
+"use client"
+
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select"
+import { STATISTICS_DIMS } from "@/lib/statistics-dims"
+import type { StatisticsPivotDim } from "@mmapp/contracts/statistics"
+import type { StatisticsSliceKind } from "@/components/data-grids/statistics-breakdown-data-grid"
+
+export function DimensionSelect({
+  value,
+  onChange,
+  label,
+}: {
+  value: StatisticsSliceKind
+  onChange: (value: StatisticsSliceKind) => void
+  label?: string
+}) {
+  const current = STATISTICS_DIMS.find((d) => d.id === value)
+  return (
+    <label className="flex items-center gap-2">
+      {label ? <span className="text-muted-foreground text-xs whitespace-nowrap">{label}</span> : null}
+      <Select value={value} onValueChange={(v) => onChange(String(v ?? value) as StatisticsSliceKind)}>
+        <SelectTrigger size="sm" className="min-w-40">
+          <SelectValue>{current?.label ?? "Измерение"}</SelectValue>
+        </SelectTrigger>
+        <SelectContent align="start">
+          {STATISTICS_DIMS.map((d) => (
+            <SelectItem key={d.id} value={d.id}>
+              {d.label}
+            </SelectItem>
+          ))}
+        </SelectContent>
+      </Select>
+    </label>
+  )
+}
+
+export function PivotDimSelect({
+  value,
+  onChange,
+  exclude,
+  label,
+}: {
+  value: StatisticsPivotDim
+  onChange: (value: StatisticsPivotDim) => void
+  exclude?: StatisticsPivotDim
+  label: string
+}) {
+  const options = STATISTICS_DIMS.filter((d) => d.pivot !== exclude)
+  const current = STATISTICS_DIMS.find((d) => d.pivot === value)
+  return (
+    <label className="flex items-center gap-2">
+      <span className="text-muted-foreground text-xs whitespace-nowrap">{label}</span>
+      <Select value={value} onValueChange={(v) => onChange(String(v ?? value) as StatisticsPivotDim)}>
+        <SelectTrigger size="sm" className="min-w-40">
+          <SelectValue>{current?.label ?? label}</SelectValue>
+        </SelectTrigger>
+        <SelectContent align="start">
+          {options.map((d) => (
+            <SelectItem key={d.pivot} value={d.pivot}>
+              {d.label}
+            </SelectItem>
+          ))}
+        </SelectContent>
+      </Select>
+    </label>
+  )
+}